济南市冬季大气污染时空分布特征及潜在污染源区分析  

Spatial and temporal distribution characteristics of air pollution and potential source areas in winter of Jinan

作　　者：王治非 王在峰 吕晨 付华轩 边萌 孙凤娟 张文娟 WANG Zhifei;WANG Zaifeng;L Chen;FU Huaxuan;BIAN Meng;SUN Fengjuan;ZHANG Wenjuan(Jinan Environmental Monitoring Center of Shandong Province,Jinan 250101,China)

机构地区：[1]山东省济南生态环境监测中心,山东济南250014

出　　处：《山东科学》2023年第4期114-121,共8页Shandong Science

基　　金：山东省重点研发计划(2015GGH301002);泉城产业领军人才支持计划(创新团队)。

摘　　要：利用2016-2018年冬季济南市大气主要污染物和气象监测数据,对大气污染特征及潜在源区进行分析。结果表明:2016-2018年冬季济南市环境空气中可吸入颗粒物PM_(10)和细颗粒物PM_(2.5)分别占首要污染物的34.7%和63.8%,轻度污染以上天数占总天数的58.6%,冬季高质量浓度PM_(2.5)导致年均值增加7.5μg/m 3;从空间分布来看,PM_(10)与PM_(2.5)空间分布为天桥区、槐荫区及平阴县质量浓度较高,SO_(2)则为商河县和济阳区质量浓度偏高,NO 2和CO为济阳区、天桥区和槐荫区质量浓度较高;研究期间NO 2、CO、PM_(10)、PM_(2.5)的质量浓度呈正相关性,相关系数均在0.7以上,推断交通源、工业燃烧源、燃煤是颗粒物的主要来源;济南市冬季的气团输送为偏南、西北、偏北和偏东4个方向,偏南和偏东气团为影响济南市冬季大气污染主要输送路径。进一步研究潜在源区贡献及浓度权重表明,济南地区大气污染物主要受本地及周边区域影响,当前大气污染呈现跨区域交叉污染特征,应建立区域联防机制,统筹研究解决区域大气环境污染突出问题。Using the datasets of major air pollutants and meteorological observations during the winter from 2016 to 2018 in Jinan,the characteristics of air pollution were analyzed to identify the major transport pathway of airmass.The results showed that during the winter from 2016 to 2018 in Jinan,about 63.8% and 34.7% of the major pollutants were PM_(2.5)and PM_(10),respectively.Of the total number of days,58.6%had a pollution level worse than good polluted.The annual average concentration of PM_(2.5)increased by 7.5μg/m 3 due to its high concentration in the winter.In terms of spatial distribution,the concentrations of PM_(10)and PM_(2.5)were high inTianqiao District,Huaiyin District,and Pingyin County;the concentration of SO_(2)was high in Shanghe County and Jiyang District;and the concentrations of NO_(2)and CO were high in Jiyang District,Tianqiao District and Huaiyin District.The results also showed thatρ(NO 2),ρ(CO),ρ(PM_(10)),andρ(PM_(2.5))had a positive correlation,with all r>0.7.It was inferred that traffic source,industrial combustion source,and burning coal were the major sources of particulate matter.The airmass in the winter of Jinan came from south,northwest,north,and east,and the airmass from south and east were the major transport pathway of air pollution.Further analyses of the potential source contribution and concentration weight showed that the air pollution in Jinan City was affected by the local and surrounding cities,and the current air pollution presents the characteristics of cross-contamination across regions.Therefore,a supervision and coordination mechanism for the joint prevention and control of air pollution in the region should be established to coordinate research and solve growing problems of air pollution.

关 键 词：大气污染物 污染特征 潜在源区贡献 浓度权重轨迹 济南市 

分 类 号：P41[天文地球—大气科学及气象学]